2008 OIM Problems/Problem 4
Problem
Prove that there are no positive integers 
and 
such that
![\[x^{2008}+2008!=21^y\]](http://latex.artofproblemsolving.com/2/0/2/2026207e891339a1b45c23c12da28a179da6f8e2.png)
~translated into English by Tomas Diaz. ~orders@tomasdiaz.com
Solution
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